CN103578690A - Multi-groove line filter - Google Patents
Multi-groove line filter Download PDFInfo
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- CN103578690A CN103578690A CN201210256793.4A CN201210256793A CN103578690A CN 103578690 A CN103578690 A CN 103578690A CN 201210256793 A CN201210256793 A CN 201210256793A CN 103578690 A CN103578690 A CN 103578690A
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- coil
- coiling
- bobbin
- hole
- down support
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Abstract
The invention discloses a multi-groove line filter which comprises a first coil, a second coil, a hollow spool with a through hole, an enclosed-H-shaped closed magnetic circuit magnetic core and a fixed support. A center post magnetic leg of the magnetic core can penetrate the through hole, the magnetic core and the spool are fixed on the fixed support, the spool is provided with a plurality of partition plates sequentially in the axial direction, a winding groove is formed between every two partition plates, the first coil and the second coil can be continuously wound in the winding grooves, four terminals are arranged at four corners of the fixed support, and two end terminals of the first coil and two end terminals of the second coil are connected with the terminals of the fixed support. The multi-groove line filter has the advantages of being small in size, high in inductance and small in pulse attenuation, effectively restraining common mode noise produced by broadband due to the fact that the coils are wound in different grooves and the like.
Description
Technical field
The present invention relates to a kind of filter, specifically relate to a kind of multiple-grooved line filter, be applicable to Switching Power Supply, AC fills orchestration, charger and various electronic equipment.
Background technology
In many electronic equipments, itself all can produce the electromagnetic interference of some its circuit or device, particularly electronic equipment tends to miniaturization gradually, a plurality of electronic components are closely by being crowded together, more easily there is electromagnetic interference problem, and this electronic equipment produces the normal operation that excessive electromagnetic interference can be disturbed other electronic equipments around, or produce phase mutual interference with other electronic installations.Filter, it is a kind of jamming incoherent signal that is used for eliminating, improve the electronic device of signal quality, can realize the frequency beyond the frequency of characteristic frequency or this frequency is carried out to effective filtering, at present, filter is widely used in Switching Power Supply, AC fills orchestration, in charger and various electronic equipment, but, along with electronic equipment tends to miniaturization gradually, also more and more harsher to the volume requirement of line filter, particularly when wideband signal, easily produce common-mode noise, therefore little in the urgent need to some volumes, and can effectively suppress the filter that wideband produces common-mode noise.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of multiple-grooved line filter, has that volume is little, inductance value is high, and impulse attenuation amount is little, and coil divides groove coiling, effectively suppresses wideband and produces the multiple advantages such as common mode noise.
Technical scheme of the present invention is achieved in that
A kind of multiple-grooved line filter, comprise the first coil, the second coil, the hollow bobbin with through hole, day font closed magnetic circuit magnetic core and hold-down support, the center pillar magnetic pin of described magnetic core can penetrate described through hole, described magnetic core and described bobbin are fixed on described hold-down support, described bobbin is provided with several dividing plates vertically successively, between adjacent two dividing plates, form coiling groove, described the first coil and the second coil can continuous reeling in described coiling groove, on described hold-down support, four jiaos are provided with four terminals, two line ends of described the first coil are connected with the two-terminal of described hold-down support respectively with two line ends of described the second coil.
As a further improvement on the present invention, the structure that the center pillar magnetic pin of described magnetic core can penetrate described through hole is, described hollow bobbin is that two semi-circular coiling pipe fittings form by cross section, and described two coiling pipe fittings mutually dock and are located by connecting.
As a further improvement on the present invention, the structure that described bobbin is provided with several dividing plates vertically is successively: the axial two ends of described bobbin are provided with the first dividing plate, middle part is provided with second partition, is provided with successively several the 3rd dividing plates between described the first dividing plate and second partition.
As a further improvement on the present invention, described the first coil and the second coil continuously symmetry are wound on described coiling groove inner structure and are: described second partition is provided with coiling through hole, and described the first coil and described the second coil can pass described coiling through hole continuous reeling between some coiling grooves.
As a further improvement on the present invention, two line ends of described the first coil with two line ends of described the second coil with the structure that the two-terminal of described hold-down support is connected are respectively: described hold-down support is provided with several metallic channels, and two line ends of described the first coil can be connected with described terminal through described metallic channel with two line ends of the second coil.
As a further improvement on the present invention, take and use direction as benchmark, described coiling groove is that along continuous straight runs is arranged and a kind of in arranging successively vertically successively, and described terminal be vertical a kind of with in parallel described bobbin axis.
The invention has the beneficial effects as follows: by the center pillar magnetic at magnetic core, wear the through hole into bobbin, magnetic core and bobbin are fixed on hold-down support, bobbin is provided with several dividing plates vertically successively, between adjacent two dividing plates, form coiling groove, the first coil and the continuous symmetry of the second coil are wound on the design in coiling groove, formed along bobbin and axially formed several a plurality of grooves of arranging successively, coil divides the structure of groove coiling, this structure can effectively suppress wideband and produce common mode noise, in addition, the present invention also has simple in structure, be convenient to implement volume little, inductance value is high, the features such as impulse attenuation amount is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is plan structure schematic diagram of the present invention (removing bearing and half magnetic core);
Fig. 3 is A-A direction structure schematic diagram (removal dividing plate) in Fig. 2 of the present invention.
By reference to the accompanying drawings, make the following instructions:
1---first coil 2---second coil
3---bobbin 31---through hole
4---magnetic core 5---hold-down support
51---terminal 61---first dividing plate
62---second partition 63---the 3rd dividing plate
Embodiment
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of multiple-grooved line filter, comprise the first coil 1, the second coil 2, the hollow bobbin 3 with through hole 31, day font closed magnetic circuit magnetic core 4 and hold-down support 5, the center pillar magnetic pin of described magnetic core can penetrate described through hole, described magnetic core and described bobbin are fixed on described hold-down support, described bobbin is provided with several dividing plates vertically successively, between adjacent two dividing plates, form coiling groove, described the first coil and the second coil can continuous reeling in described coiling groove, like this, along bobbin, several a plurality of grooves of arranging have successively axially been formed, the first coil and the second coil divide groove coiling, can effectively suppress wideband and produce common mode noise, on described hold-down support, four jiaos are provided with four terminals 51, two line ends of described the first coil are connected with the two-terminal of described hold-down support respectively with two line ends of described the second coil.
Preferably, the structure that the center pillar magnetic pin of described magnetic core can penetrate described through hole is, described hollow bobbin is that two semi-circular coiling pipe fittings form by cross section, and described two coiling pipe fittings mutually dock and are located by connecting.
Preferably, the structure that described bobbin is provided with several dividing plates vertically is successively: the axial two ends of described bobbin are provided with the first dividing plate 61, middle part is provided with second partition 62, is provided with successively several the 3rd dividing plates 63 between described the first dividing plate and second partition.
Preferably, described the first coil and the second coil continuously symmetry are wound on described coiling groove inner structure and are: described second partition is provided with coiling through hole, and described the first coil and described the second coil can pass described coiling through hole continuous reeling between some coiling grooves.
Preferably, two line ends of described the first coil with two line ends of described the second coil with the structure that the two-terminal of described hold-down support is connected are respectively: described hold-down support is provided with several metallic channels, and two line ends of described the first coil can be connected with described terminal through described metallic channel with two line ends of the second coil.
Preferably, the use direction of take is benchmark, described coiling groove is that along continuous straight runs is arranged and a kind of in arranging successively vertically successively, described terminal is vertical a kind of with in parallel described bobbin axis, like this, can be according to electronic circuit needs, dimensional requirement, designing filter is vertical or horizontal, thereby saves electronic circuit spatial volume.
Above embodiment is with reference to accompanying drawing; to a preferred embodiment of the present invention will be described in detail; those skilled in the art is by above-described embodiment being carried out to modification or the change on various forms, but do not deviate from the situation of essence of the present invention, within all dropping on protection scope of the present invention.
Claims (6)
1. a multiple-grooved line filter, it is characterized in that: comprise the first coil (1), the second coil (2), the hollow bobbin (3) with through hole (31), day font closed magnetic circuit magnetic core (4) and hold-down support (5), the center pillar magnetic pin of described magnetic core can penetrate described through hole, described magnetic core and described bobbin are fixed on described hold-down support, described bobbin is provided with several dividing plates vertically successively, between adjacent two dividing plates, form coiling groove, described the first coil and the second coil can continuous reeling in described coiling groove, on described hold-down support, four jiaos are provided with four terminals (51), two line ends of described the first coil are connected with the two-terminal of described hold-down support respectively with two line ends of described the second coil.
2. multiple-grooved line filter according to claim 1, it is characterized in that: the structure that the center pillar magnetic pin of described magnetic core can penetrate described through hole is, described hollow bobbin is that two semi-circular coiling pipe fittings form by cross section, and described two coiling pipe fittings mutually dock and are located by connecting.
3. multiple-grooved line filter according to claim 1, it is characterized in that: the structure that described bobbin is provided with several dividing plates vertically is successively: the axial two ends of described bobbin are provided with the first dividing plate (61), middle part is provided with second partition (62), between described the first dividing plate and second partition, be provided with successively several the 3rd dividing plates (63).
4. multiple-grooved line filter according to claim 1, it is characterized in that: described the first coil and the second coil continuously symmetry are wound on described coiling groove inner structure and are: described second partition is provided with coiling through hole, and described the first coil and described the second coil can pass described coiling through hole continuous reeling between some coiling grooves.
5. multiple-grooved line filter according to claim 1, it is characterized in that: two line ends of described the first coil with two line ends of described the second coil with the structure that the two-terminal of described hold-down support is connected are respectively: described hold-down support is provided with several metallic channels, two line ends of described the first coil can be connected with described terminal through described metallic channel with two line ends of the second coil.
6. according to the multiple-grooved line filter described in claim 1 to 5 any one, it is characterized in that: take and use direction as benchmark, described coiling groove is that along continuous straight runs is arranged and a kind of in arranging successively vertically successively, and described terminal be vertical a kind of with in parallel described bobbin axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256793.4A CN103578690A (en) | 2012-07-24 | 2012-07-24 | Multi-groove line filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256793.4A CN103578690A (en) | 2012-07-24 | 2012-07-24 | Multi-groove line filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103578690A true CN103578690A (en) | 2014-02-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210256793.4A Pending CN103578690A (en) | 2012-07-24 | 2012-07-24 | Multi-groove line filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103578690A (en) |
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2012
- 2012-07-24 CN CN201210256793.4A patent/CN103578690A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140212 |